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The Coexistence of Super Conductivity and Spin Density Wave (SDW) in SmO<sub>1-x</sub>F<sub>x</sub>FeAs
Department of Physics, Addis Ababa University, Addis Ababa, Ethiopia
Department of Physics, Addis Ababa University, Addis Ababa, Ethiopia
- 1 Department of Physics, Addis Ababa University, Addis Ababa, Ethiopia
- 2 Department of Physics, Addis Ababa University, Addis Ababa, Ethiopia
World Journal of Condensed Matter Physics·Volume 04 (2014)·Pages 101–106·Published 15 August 2014·DOI10.4236/wjcmp.2014.43015
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Abstract
The coexistence of superconductivity and spin density wave in SmO 1-x F x FeAs is theoretically studied using the model Hamiltonian which contains BCS type superconductivity and spin density wave terms. Employing green function formalism, the expression for the spin density wave order parameter (M) and expression for spin density wave transition temperature T SDW is obtained. The inte rplay between the superconductivity and spin density wave is examined in these parameters and the coexistence of the two states is established in the order parameter range of 0.1 ≤ M meV ≤ 0.13 which is seen to be in broad experimental agreement.
KeywordsCoexistenceSuperconducting Order ParameterSpin Density Wave Order Parameter and Green Function
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